Platelet-Rich Plasma Versus Home-Based Exercise for Partial-Thickness Supraspinatus Tears

NCT ID: NCT07246434

Last Updated: 2025-11-24

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

40 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-09-01

Study Completion Date

2024-07-31

Brief Summary

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This study evaluates the clinical effectiveness of platelet-rich plasma (PRP) injections compared with a home-based exercise program in patients with partial-thickness tears of the supraspinatus tendon. Partial supraspinatus tears are a common cause of chronic shoulder pain and functional limitation. PRP has been proposed as a biological treatment that may promote tissue healing, while therapeutic exercise remains a standard conservative intervention.

This prospective, controlled study includes two parallel groups. The PRP group receives three monthly ultrasound-guided intratendinous PRP injections, preceded by local anesthesia. The control group follows a structured home-based exercise program for the same overall treatment period. All participants are assessed at baseline and again two months after completing their assigned intervention.

The primary outcome is shoulder pain measured with a Visual Analog Scale (VAS). Secondary outcomes include shoulder range of motion (flexion, extension, abduction, adduction, internal and external rotation) and functional disability measured with the Constant-Murley Score. The study also analyzes whether patient characteristics such as age or sex are associated with clinical improvement.

The aim of this research is to compare two commonly used conservative treatment strategies and provide evidence to guide clinical decision-making for patients with partial-thickness supraspinatus tears.

Detailed Description

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Conditions

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Rotator Cuff Injuries Shoulder Joint Shoulder Pain

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Two-group prospective controlled design comparing PRP injections with a home-based exercise program in parallel arms.
Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Investigators Outcome Assessors

Study Groups

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PRP Injection

Participants receive three monthly ultrasound-guided intratendinous injections of platelet-rich plasma (PRP) in the affected supraspinatus tendon, preceded by local anesthetic infiltration in the subacromial bursa.

Group Type EXPERIMENTAL

Platelet-Rich Plasma (PRP)

Intervention Type BIOLOGICAL

Ultrasound-guided intratendinous injection of 4 mL PRP prepared from autologous blood using the BS PRP SYSTEM-20 kit. A total of three injections are administered at one-month intervals. Local anesthesia with 5 mL mepivacaine 2% is applied subacromially prior to PRP administration.

Home-Based Exercise Program

Active Comparator

Group Type ACTIVE_COMPARATOR

Home Exercise Program

Intervention Type OTHER

A supervised-prescribed home-based shoulder exercise program including mobility, strengthening, and scapular stabilization exercises. The program is performed regularly over approximately three months, with progression based on clinical guidelines for rotator cuff rehabilitation.

Interventions

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Platelet-Rich Plasma (PRP)

Ultrasound-guided intratendinous injection of 4 mL PRP prepared from autologous blood using the BS PRP SYSTEM-20 kit. A total of three injections are administered at one-month intervals. Local anesthesia with 5 mL mepivacaine 2% is applied subacromially prior to PRP administration.

Intervention Type BIOLOGICAL

Home Exercise Program

A supervised-prescribed home-based shoulder exercise program including mobility, strengthening, and scapular stabilization exercises. The program is performed regularly over approximately three months, with progression based on clinical guidelines for rotator cuff rehabilitation.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Age between 20 and 70 years.

Shoulder pain for more than 6 months with a Visual Analog Scale (VAS) score \> 4.

Partial-thickness tear of the supraspinatus tendon confirmed by ultrasound.

No improvement in VAS after conservative treatment with NSAIDs and/or physical therapy during the previous 6 months.

Willingness to undergo blood extraction and PRP infiltrations as required by the protocol.

Exclusion Criteria

* Age \< 20 or \> 70 years.

Full-thickness tear of the supraspinatus tendon.

Active infection (osteomyelitis, septic arthritis).

Current treatment with NSAIDs, antiplatelet agents, or systemic immunosuppressants.

Severe thrombocytopenia.

Positive serology (syphilis, HIV, HBV, HCV).
Minimum Eligible Age

20 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Universidad de Extremadura

OTHER

Sponsor Role lead

Responsible Party

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Carlos Fernández-Morales

Clinical Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Luis Espejo-Antúnez, Ph.D.

Role: STUDY_DIRECTOR

University of Extremadura

Locations

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University of Extremadura

Badajoz, Badajoz, Spain

Site Status

Countries

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Spain

Other Identifiers

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10

Identifier Type: -

Identifier Source: org_study_id

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